The RM6.6bil criminal breach of trust (CBT) trial involving former prime minister Datuk Seri Najib Razak and former Treasury secretary-general Tan Sri Mohd Irwan Serigar Abdullah has been postponed to May 29 due to a new development.br br Meanwhile, Najib's lead counsel Tan Sri Muhammad Shafee Abdullah informed the court that he had also sent a letter seeking the postponement following the settlement by the Malaysian government and the International Petroleum Investment Company (IPIC).